Eroare de compilare: user.cpp:2:21: error: fstream.h: No such file or directory user.cpp: In function ‘void readdata()’: user.cpp:29: error: ‘ifstream’ was not declared in this scope user.cpp:29: error: expected ‘;’ before ‘fin’ user.cpp:31: error: ‘fin’ was not declared in this scope user.cpp: In function ‘void writedata()’: user.cpp:64: error: ‘ofstream’ was not declared in this scope user.cpp:64: error: expected ‘;’ before ‘fout’ user.cpp:65: error: ‘fout’ was not declared in this scope user.cpp:65: error: ‘endl’ was not declared in this scope